In old Xizang, population growth remained stagnant for a long period. In 1953, the population of Xizang was merely 1 million, with an average life expectancy of 35.5 years. By 2023, the total population of Xizang had reached 3.65 million, and the average life expectancy stood at 72.19 years, representing an increase of more than three times and more than one time respectively compared to the early period after peaceful liberation.